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File:Bell's drawing for Patent 161739 granted by U.S. PTO in April 1875.jpg

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SummaryEdit

Description
English: Bell's drawing for his application for a patent for a primitive fax machine (which he called the "autograph telegraph") showed multiple liquid transmitters.
Date
Source Library of Congress
Author Alexander Graham Bell

LicensingEdit

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or less.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1923.

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